Genomic SEM path diagram demonstrating the underlying latent structure of 12 of the 13 global phenotypes and the interfactor genetic correlations. Dashed lines connecting two variables, covariance relationships; double-headed arrows connecting a variable to itself, variance estimates; single-headed arrows pointing from independent variables to dependent variables, regression relationships. Circles indicate latent variables, and squares indicate measured phenotypes. The model was identified using unit variance identification such that the variance of the latent factors was set to one, and the dotted arrows across the factors can be interpreted as genetic correlation estimates.
